The team keeps trying to infiltrate the drug-smuggling ring in order to get to a terrorist. Meanwhile, Alex is offered a promotion in Miami and Ty keeps struggling with his divorce.

A sting operation against a local crime lord crosses paths with an FBI investigation, forcing Carter and his team to work to bring him down with the help of FBI Special Agent Alex Rice. What starts our as a simple goal gets complicated after a close friend of Carter’s is caught in the crossfire putting Carter’s personal stake in the cast at odds with Alex’s professional agenda.

Ty's conscious is hit hard when the undercover crew goes in pursuit of a crooked, yet decorated cop, particularly when Ty's wife floors him with big news.

The team goes deep behind the scenes to stop a crime ring which has a big diamond heist planned, with Dean and Jammie pretending to be a married couple to get closer to a major player. Meanwhile, Ty reconsiders his dangerous job after Melissa informs him she wants to start a family.

After a young black man is gunned down, evidence points to the possible corruption of a noted figure in the black community; Ty dates a woman with a connection to the shooting.

Jaimie poses as a junkie in order to infiltrate a dangerous crew of thieves who pose as DEA agents in order to steal from drug dealers. As Carter grows concerned about Jaimie’s eagerness to make the case, Ty and Dean are stuck with a loveable yet annoying informant who wants nothing more than to be a cop, just like them.

The team goes after a home invasion crew with Alex and Carter acting as the bait.

Carter, Dean and Jaimie go undercover to corner two drug-smuggling brothers who use a flower-import business as a cover for their activities. But things go awry when Homeland Security requests that the team keep the smuggling business open so they can trap a potential terrorist. Meanwhile, Dean asks Jaimie out on a proper date just; Ty has second thoughts about his impending divorce; and Carter for a major life change.

A turf war between two feuding gangs is the area where the covert team penetrates. One gang is a new group which plans on taking over the heroin business. In other developments, Ty's sister is in need of $7,000, which neither Ty and Melissa can afford.

Ty goes undercover to search for a gun trafficker, but nearly blows his cover by breaking a crucial rule and seeing his wife on her birthday. Carter must come up with $100,000 to keep Ty's mission protected...and to save his life.